CN108731079A - A kind of kitchen ventilator of the multi-frequency noise filtering with through-hole - Google Patents
A kind of kitchen ventilator of the multi-frequency noise filtering with through-hole Download PDFInfo
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- CN108731079A CN108731079A CN201810776887.1A CN201810776887A CN108731079A CN 108731079 A CN108731079 A CN 108731079A CN 201810776887 A CN201810776887 A CN 201810776887A CN 108731079 A CN108731079 A CN 108731079A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2035—Arrangement or mounting of filters
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ventilation (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
A kind of kitchen ventilator of the multi-frequency noise filtering with through-hole is provided with smoke machine main body and can eliminate the noise filtering device of multi-frequency noise, and noise filtering device is assemblied in smoke machine main body；The noise filtering device is set as that multiple panels for eliminating the through-hole of multi-frequency noise are distributed with.The noise filtering device can keep long-term good noise reduction, which, which has, is easy to arrange, and dust, the grease on surface etc. can remove cleaning.The noise filtering device has the advantages that low cost, reliability are high.The material of the noise filtering device is anticorrosive, chemical resistance and is hardly damaged.Narrow frequency noise and broadband noise can be effectively reduced, noise reduction wide frequency range can reduce the noise of multiple frequencies.
Description
Technical field
The present invention relates to kitchen ventilator field, more particularly to the kitchen ventilator of a kind of multi-frequency noise filtering with through-hole.
Background technology
It is chronically in the environment of high noisy, the hearing of people is often damaged, and can also be made in the environment of having noise for a long time
At user emotion problem.As people's quality of the life improves, people are also lower and lower to the tolerance of noise.Therefore kitchen ventilator
Noise reduction is also increasingly paid attention to.
Kitchen ventilator noise reduction in the prior art is mostly the reduction that noise is realized by active noise reduction and passive noise reduction mode.
Active noise reduction mode can only act on noise of the frequency within 1000Hz, can only be by passive for the noise more than 1000Hz
Noise reduction technology processing.And the noise that the passive denoising device of the prior art can only be directed to single-frequency section is handled, it cannot be right
The noise of multiband carries out noise reduction.Since the noisy frequency range that kitchen ventilator generates can be 100Hz~8000Hz, it is clear that existing
Kitchen ventilator can not be directed to for the passive denoising device of single-frequency section generate good noise reduction in technology.
Therefore, in view of the shortcomings of the prior art, a kind of kitchen ventilator of the multi-frequency noise filtering with through-hole of offer is existing to solve
There is technical deficiency very necessary.
Invention content
A kind of multi-frequency noise mistake with through-hole is provided it is an object of the invention to avoid the deficiencies in the prior art place
The kitchen ventilator of filter.The kitchen ventilator of the multi-frequency noise filtering with through-hole has the advantages that multi-frequency noise can be eliminated.
The above-mentioned purpose of the present invention is realized by following technical measures：
A kind of kitchen ventilator of the multi-frequency noise filtering with through-hole is provided, smoke machine main body is provided with and multi-frequency can be eliminated
The noise filtering device of noise, noise filtering device are assemblied in smoke machine main body.
The noise filtering device is set as that multiple panels for eliminating the through-hole of multi-frequency noise are distributed with.
The wall surface of panel towards smoke machine main body is defined as front on one side, another side is defined as reverse side, the through-hole is just
The aperture in face is defined as d1, the aperture of through-hole reverse side is defined as d2。
The through-hole is rectilinear through-hole, d1=d2, the side of corresponding through-hole is parallel with the width in panel section；Or
The through-hole is bevel edge through-hole, d1≠d2, the bevel edge of corresponding through-hole and panel section it is wide at included angle A, and A≤
20°。
Preferably, above-mentioned panel is provided with panel body and protrusion, protrusion and panel body integrally connected, through-hole from
Panel body is through to protrusion, and through-hole is set as arc-shaped transition section in panel body, is d with the positive aperture of protrusion1,
The aperture of the reverse side of protrusion is d2。
Preferably, above-mentioned d1≤30mm。
It is further preferred that above-mentioned d1Value be it is multiple.
Preferably, the minimum range between the positive edge of above-mentioned through-hole and the positive edge of adjacent through-holes is b, and b is big
In 0 arbitrary value.
It is further preferred that the value of above-mentioned b is multiple.
Preferably, above-mentioned panel is provided with multiple regions, and multiple through-holes are by area distribution in corresponding positions of panels.
Preferably, above-mentioned zone is symmetrical formula region, formula region symmetrical above and below or asymmetric formula region；Or
The region is divergence expression region, spiral region, wave region, winding type region or removes above-mentioned zone
Random mode region.
The present invention is by adjusting the edge minimum range in the aperture of different through-holes, the edge of through-hole and adjacent through-holes, through-hole
The combination of area distribution or panel at a distance from smoke machine main body reaches multi-frequency noise noise reduction
Preferably, the thickness of above-mentioned panel is less than 20mm.
Preferably, there are gaps between above-mentioned panel and the immediate wall surface of smoke machine main body, are by the distance definition in gap
H1。
Preferably, above-mentioned noise filtering device is additionally provided with sound-absorbing part, and sound-absorbing part assembles smoke machine main body.
Preferably, the thickness of above-mentioned sound-absorbing part is defined as H2, and H2≤0.6H1。
Preferably, above-mentioned sound-absorbing part is fixed on the outer surface of panel；Or
The sound-absorbing part is fixed on the surface of panel and the nearest wall surface of smoke machine main body；Or
The sound-absorbing part is fixed between panel and the nearest wall surface gap of smoke machine main body.
Preferably, above-mentioned sound-absorbing part is fiber, PP cottons, polyester fiber, Carbon fibe or porous foam；Or
The sound-absorbing part is porous plate；
Preferably, above-mentioned panel is metal decking, plastic front board or alloy panel.
Preferably, above-mentioned panel is connected with reinforced structure.
Preferably, above-mentioned reinforced structure is convex closure, recessed packet or reinforcing rib.
Preferably, it is 100Hz~8000Hz that above-mentioned noise filtering device, which eliminates noisy frequency range,.
A kind of kitchen ventilator of multi-frequency noise filtering with through-hole of the present invention is provided with smoke machine main body and can eliminate more
The noise filtering device of frequency noise, noise filtering device are assemblied in smoke machine main body.Denoising device in the prior art, Zhi Nengzhen
To single target frequency noise reduction.A kind of kitchen ventilator of multi-frequency noise filtering with through-hole of the present invention can be by adjusting not
With the edge minimum range in the aperture of through-hole, the edge of through-hole and adjacent through-holes, via regions distribution or panel and smoke machine master
The combination of the distance of body reaches multi-frequency noise noise reduction.The noise filtering device can keep long-term good noise reduction, this is made an uproar
Sound filter device, which has, to be easy to arrange, and dust, the grease on surface etc. can remove cleaning.The noise filtering device have it is low at
Originally, the high advantage of reliability.The material of the noise filtering device is anticorrosive, chemical resistance and is hardly damaged.It can effectively drop
Low narrow frequency noise and broadband noise, noise reduction wide frequency range can reduce the noise of multiple frequencies.
Description of the drawings
Using attached drawing, the present invention is further illustrated, but the content in attached drawing does not constitute any limit to the present invention
System.
Fig. 1 is a kind of range hood structure schematic diagram of multi-frequency noise filtering with through-hole of embodiment 1.
Fig. 2 is the panel construction schematic diagram in Fig. 1.
Fig. 3 is rectilinear through-hole schematic cross-section in Fig. 1.
Fig. 4 is the bevel edge through-hole schematic cross-section of embodiment 2.
Fig. 5 is the schematic cross-section of the panel of 3 rectilinear through-hole of embodiment.
Fig. 6 is the schematic cross-section of the panel of bevel edge through-hole.
Fig. 7 is the panel construction schematic diagram of embodiment 4.
Fig. 8 is through-hole different zones distribution mode, and the B in A and Fig. 8 in Fig. 8 is symmetrical formula region, the C in Fig. 8
It is formula region symmetrical above and below with the D in Fig. 8, the F in E and Fig. 8 in Fig. 8 is asymmetric formula region.
Fig. 9 is a kind of range hood structure schematic diagram of multi-frequency noise filtering with through-hole of embodiment 5.
Figure 10 is the panel construction schematic diagram of embodiment 6.
Figure 11 is the panel construction schematic diagram of the embodiment of the present invention 7.
Figure 12 is through-hole different zones distribution mode, and the B in A and Figure 12 in Figure 12 is divergence expression region, the C in Figure 12
It is spiral region with the D in Figure 12, the F in E and Figure 12 in Figure 12 is wave region, the H in G and Figure 12 in Figure 12
For winding type region, the J in I and Figure 12 in Figure 12 is random mode region.
In Fig. 1 to Figure 12, include：
Noise filtering device 1,
Panel 11, through-hole 111, reinforced structure 112, panel body 113, protrusion 114,
Sound-absorbing part 12,
Smoke machine main body 2.
Specific implementation mode
Technical scheme of the present invention is described further with the following Examples.
Embodiment 1.
A kind of kitchen ventilator of the multi-frequency noise filtering with through-hole is provided with smoke machine main body 2 and can as shown in Figures 1 to 3
The noise filtering device 1 of multi-frequency noise is eliminated, noise filtering device 1 is assemblied in smoke machine main body 2.Noise filtering device 1 is arranged
For multiple panels 11 for eliminating the through-hole 111 of multi-frequency noise are distributed with.
The wall surface of panel 11 towards smoke machine main body 2 is defined as front on one side, another side is defined as reverse side, the through-hole
111 positive apertures are defined as d1, the aperture of 111 reverse side of through-hole is defined as d2.The through-hole 111 of the present embodiment is preferably that straight flange is logical
Hole 111, d1=d2, the side of corresponding through-hole 111 is parallel with the width in 11 section of panel.
The d of the present invention1≤30mm.The edge of through-hole 111 is b with the edge minimum range of adjacent through-holes 111, and b is more than 0
Arbitrary value.The d of the present embodiment1Value with b is all multiple.
The present invention is in aperture d1In the case of constant, the edge of through-hole 111 is with the edge minimum range b's of adjacent through-holes 111
The target noise frequency for being worth smaller elimination is bigger.The edge of through-hole 111 and adjacent through-holes 111 edge minimum range b not
In the case of change, aperture d1The smaller target noise frequency to be eliminated of value with regard to smaller.
It should be noted that when the value of the value and d for b is unique, it can be to specific unifrequency noise noise reduction.But work as b
And d1For when multiple and different values specific unifrequency noise or multi-frequency noise noise reduction can be combined into according to matching for the two value.b
Value and d1The number of value, size is depending on actual conditions.
The denoising device principle of the present invention is such：Noise filtering device 1 can made an uproar in limited closed space
When sound source travels to noise filtering device 1, noise reduction is carried out.Sound wave is usually propagated with negative direction touching noise filtering device 1,
So most incidence wave can be interfered with back wave.
Noise filtering device 1 is to carry out noise reduction using the principle of resonance, the target of specific noise frequency and setting in space
The noise filtering device 1 of frequency forms covibration.
When resonance occurs, the sound wave of oscillation can intensely pierce into out through-hole 111 back and forth in air, and the acoustic energy of noise exists
It is converted to friction loss during this, achievees the effect that eliminate target frequency noise.
The kitchen ventilator of the multi-frequency noise filtering with through-hole can be by adjusting different through-holes 111 aperture, through-hole 111
Edge and adjacent through-holes 11 edge minimum range, 11 area distribution of through-hole or panel 11 at a distance from smoke machine main body 2
Combination reaches multi-frequency noise noise reduction.The noise filtering device 1 can keep long-term good noise reduction.The noise filtering device 1
It is easy to arrange, while the dust on 1 surface of noise filtering device, grease can be removed by removing.The noise filtering device 1 has
Low cost and the high advantage of reliability.The advantages of material of the noise filtering device 1 is anticorrosive and chemical resistance, is hardly damaged
The advantages of., while the noise filtering device 1 can effectively reduce narrow frequency noise and broadband noise, noise reduction frequency range is big, simultaneously
The noise of multiple frequencies can be reduced.
Embodiment 2.
A kind of kitchen ventilator of the multi-frequency noise filtering with through-hole, as shown in figure 4, other characteristics are same as Example 1, no
It is with place：The through-hole 111 of the present embodiment is bevel edge through-hole 111, d1≠d2, correspond to bevel edge and 11 section of panel of through-hole 111
Wide at included angle A, and A≤20 °.
Because being made in technique, the aperture of the positive and negative of through-hole 111 has been susceptible to different size and has formed bevel edge and lead to
Hole 111.
Compared with Example 1, the production technology of the present embodiment is easier.
Embodiment 3.
A kind of kitchen ventilator of the multi-frequency noise filtering with through-hole, as shown in figure 5, other features are same as Example 1, no
It is with place, panel 11 is provided with panel body 113 and protrusion 114, protrusion 114 and 113 integrally connected of panel body,
Through-hole 111 is through to protrusion 114 from panel body 113, and through-hole 111 is set as arc-shaped transition section in panel body 113, with convex
The positive aperture for going out portion 114 is d1, the aperture of the reverse side of protrusion 114 is d2。
It should be noted that the panel 11 of bevel edge through-hole 111 of the invention can also be provided with protrusion 114, such as Fig. 6 institutes
Show, specific performance is depending on actual conditions.
Compared with Example 1, it is low resistance that the setting of the protrusion 114 of panel 11, which can improve the more rigid of panel 11,
Structure.Low resistance structure can make incidence wave and back wave have out of phase under the specific distance with reflecting surface, to make an uproar
The sound wave of sound can cancel out each other, to reduce the intensity of noise.
Embodiment 4.
A kind of kitchen ventilator of the multi-frequency noise filtering with through-hole, as shown in fig. 7, other features are same as Example 1, no
It is with place, panel 11 of the present invention is provided with multiple regions, and multiple through-holes 111 are by area distribution in corresponding panel 11
It sets.
The region of the present invention can be divided into symmetrical formula region, formula region symmetrical above and below or asymmetric formula region.Tool
Body, the through-hole 111 of the present embodiment panel 11 is by symmetrical formula region such as the a-quadrant in Fig. 7, formula region symmetrical above and below such as figure
The various forms of area distributions in three kinds of the regions C and D in B area and asymmetric formula region such as Fig. 7 in 7 are in panel 11.
The symmetrical formula region of the present embodiment, as shown in the A in Fig. 7.It should be noted that symmetrical in the present invention
Formula region is not limited to the region that the B in the A or Fig. 8 in A, Fig. 8 in Fig. 7 is these three symmetrical formula modes, other
The region of arbitrary symmetrical formula mode also meets the requirement in symmetrical formula region in the present invention, also in the protection model of the present invention
In enclosing.
The formula region symmetrical above and below of the present embodiment, as shown in the B in Fig. 7.It should be noted that symmetrical above and below in the present invention
Formula region is not limited to these three the formula mode symmetrical above and below regions the D in the C or Fig. 8 in B, Fig. 8 in Fig. 7, any other
The region of formula mode symmetrical above and below also meets the requirement in present invention formula region symmetrical above and below, also within the scope of the present invention.
The asymmetric formula region of the present embodiment, as shown in the D in the C and Fig. 7 in Fig. 7.It should be noted that in the present invention
Asymmetric formula region is not limited to these four asymmetric formula sides of the F in E or Fig. 8 in D, Fig. 8 in C, Fig. 7 in Fig. 7
The region of formula, the region of any other asymmetry formula mode also meets the requirement in asymmetric formula region of the invention, also in the present invention
Protection domain in.
It should be noted that the through-hole 111 of the panel 11 of the present invention is not limited to the left and right as shown in Figure 7 of the present embodiment
The distribution mode in symmetrical region, formula region symmetrical above and below and asymmetric formula region, or symmetrical formula region, up and down
The multiple arrangements of any one in symmetrical region or asymmetric formula region, a row that can also be more than two kinds of regions
Row, or multiple arrangements more than two kinds of regions, depending on specific performance is with actual conditions.
The through-hole 111 of the panel 11 of the present embodiment is to be conducive to be configured institute by region by the effect that multiple regions are distributed
Need the frequency of target noise eliminated.
A kind of kitchen ventilator of multi-frequency noise filtering with through-hole of the present invention can be by adjusting the hole of different through-holes 111
The edge minimum range at the edge of diameter and through-hole 111 and adjacent through-holes 111 reaches the mesh for the noise for reducing different target frequency
, therefore the present invention can reach wideband frequency noise reduction purpose by division, arrangement and the arrangement in 11 through-hole of panel, 111 region.
Embodiment 5.
A kind of kitchen ventilator with multi-frequency on-plane surface noise filtering device 1, as shown in figure 9, other features and 1 phase of embodiment
Together, the difference is that, the present invention is by adjusting the aperture of different through-holes 111, edge and the adjacent through-holes 111 of through-hole 111
Edge minimum range or 111 area distribution of through-hole of panel 11 achieve the purpose that multi-frequency noise noise reduction.
The thickness of the panel 11 of the present invention is less than 20mm, because of the weight of the blocked up cost and kitchen ventilator that can increase making of thickness
Amount.
There are gaps between the 2 immediate wall surface of panel 11 and smoke machine main body of the present embodiment, by the distance definition in gap
For H1.On-plane surface noise filtering device 1 is additionally provided with sound-absorbing part 12, and sound-absorbing part assembles smoke machine main body 2.The thickness of sound-absorbing part 12 is fixed
Justice is H2, and H2≤0.6H1。
The sound-absorbing part 12 of the present embodiment is fixed on the outer surface of panel 11.It should be noted that the sound-absorbing part 12 of the present invention also may be used
It is fixed on panel 11 and smoke machine main body 2 most with the surface or sound-absorbing part 12 of being fixed on panel 11 and 2 nearest wall surface of smoke machine main body
Between close wall surface gap, depending on specific embodiment is with actual conditions.
The density and material of sound-absorbing part 12 also have important influence, sound wave can directly through the sound-absorbing part of extremely-low density,
The frictional wear of acoustic energy can not be increased；Under high density, noise sound wave then can be reflected away directly, can not enter noise mistake
Filter the through-hole 111 of device 1.Therefore the sound-absorbing part 12 of the present invention is preferably fiber, PP cottons, polyester fiber, Carbon fibe or porous
Foam.Or sound-absorbing part 12 is porous plate.
The present embodiment increases sound-absorbing part 12 compared with embodiment 1, and the setting of sound-absorbing part 12 can increase the consume of friction, reinforce drop
It makes an uproar effect.
Embodiment 6.
A kind of kitchen ventilator of the multi-frequency noise filtering with through-hole, as shown in Figure 10, other features are same as Example 1,
The difference is that the panel 11 of the present embodiment is specially metal decking 11.Noise filtering device 1 eliminates noisy frequency range
100Hz~8000Hz.
It should be noted that the panel 11 or plastic front board 11 or alloy panel 11 of the present invention, specific embodiment party
Depending on formula is with actual conditions.
The panel 11 of the present embodiment is connected with reinforced structure 112.Specific reinforced structure 112 is reinforcing rib.
It should be noted that reinforced structure 112 of the invention or convex closure or recessed packet, or a variety of arbitrary groups
It closes, depending on specific embodiment is with actual conditions.
Compared with Example 1, the more rigid of panel 11 is low resistance structure to the present embodiment.Low resistance structure can make into
Ejected wave and back wave have out of phase under the specific distance with reflecting surface, can cancel out each other to the sound wave of noise, from
And reduce the intensity of noise.The panel 11 of the metal of the present embodiment has the advantages that high temperature resistant, durable.
Embodiment 7.
A kind of kitchen ventilator with multi-frequency on-plane surface noise filtering device 1, as shown in figure 11, other features and embodiment 1
It is identical, the difference is that, the region of the present embodiment can be divided into divergence expression region, spiral region, wave region, detour
Formula region or the random mode region for removing above-mentioned zone.
The region of the present embodiment can be divided into two spiral regions, a divergence expression region and a random mode region.
Specifically, the B area in A and Figure 11 in the 111 spiral region of through-hole of the present embodiment panel 11 such as Figure 11, divergence expression region
If the tri- kinds of various forms of area distributions in the regions D in Figure 11 and the C in random mode region such as Figure 11 are in panel 11.
The divergence expression region of the present embodiment, as shown in the D in Figure 11.It should be noted that the divergence expression region in the present invention
It is not limited to these three divergence expression regions of the B in the A or Figure 12 in D, Figure 12 in Figure 11, any other divergence expression mode
Region also complies with the requirement in divergence expression region of the present invention, also within the scope of the present invention.
The spiral region of the present embodiment, as shown in the B in the A and Figure 11 in Figure 11, it should be noted that, in the present invention
Spiral region is not limited to these four spiral areas of the D in C or Figure 12 in B, Figure 12 in A, Figure 11 in Figure 11
Domain, any other spiraling manner region also comply with the requirement of the present invention, also within the scope of the present invention.
The random mode region of the present embodiment, as shown in the C in Figure 11, the random mode region in the present invention is not limited to Figure 11
In C, Figure 12 in I or Figure 12 in J these three random mode regions, any other random mode mode region also complies with this
The requirement of invention, also within the scope of the present invention.
Wave region in the present invention is not limited to both wave regions of the F in the E and Figure 12 in Figure 12,
His arbitrary wave mode region also complies with the requirement of the present invention, also within the scope of the present invention.
Winding type region in the present invention is not limited to both winding type modes of the H in the G and Figure 12 in Figure 12,
His arbitrary winding type mode region also complies with the requirement of the present invention, also within the scope of the present invention.
It should be noted that the through-hole 111 of the panel 11 of the present invention is not limited to the diverging as shown in figure 11 of the present embodiment
The distribution mode in formula region, random mode region and spiral region, or divergence expression region, spiral region, wave
The multiple arrangements of any one in the random mode region in region, winding type region or removing above-mentioned zone, can also be two kinds
A more than region arrangement, or multiple arrangement specific embodiments more than two kinds of regions can be according to practical feelings
Depending on condition.
The present embodiment compared with Example 1, can increase the diversity of 11 through-hole of panel, 111 distributed areas.
Embodiment 8.
A kind of design of the kitchen ventilator of the multi-frequency noise filtering with through-hole：
Target frequency 1：7000Hz.
The aperture d=10mm of through-hole 111, the edge of through-hole 111 and the edge minimum range b=23mm of adjacent through-holes 111,
H1=2.6mm.
Target frequency 2：800Hz.
The aperture d=2mm of through-hole 111, the edge of through-hole 111 and the edge minimum range b=23mm of adjacent through-holes 111,
H1=2.5mm.
Therefore the noise filtering device 1 of the kitchen ventilator is only in the spy with the corresponding through-hole of above-mentioned two target frequency 111
Property can effectively eliminate the noise of corresponding frequency.
It should be noted that the present embodiment only lists the design parameter of two target frequencies, table can not only for the present invention
For the noise of two kinds of frequencies, only corresponding different parameter, the noise of the invention that can eliminate multi-frequency reach wideband frequency drop
It makes an uproar purpose.
Embodiment 8.
A kind of design of the kitchen ventilator of the multi-frequency noise filtering with through-hole：
Target frequency 1：8000Hz.
The aperture d=10mm of through-hole 111, the edge of through-hole 111 and the edge minimum range b=23mm of adjacent through-holes 111,
H1=2.5mm.
Target frequency 2：100Hz.
The aperture d=2mm of through-hole 111, the edge of through-hole 111 and the edge minimum range b=23mm of adjacent through-holes 111,
H1=50mm.
Therefore the noise filtering device 1 of the kitchen ventilator is only in the spy with the corresponding through-hole of above-mentioned two target frequency 111
Property can effectively eliminate the noise of corresponding frequency.
It should be noted that the present embodiment only lists the design parameter of two target frequencies, table can not only for the present invention
For the noise of two kinds of frequencies, only corresponding different parameter, the noise of the invention that can eliminate multi-frequency reach wideband frequency drop
It makes an uproar purpose.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention rather than is protected to the present invention
The limitation of range, although being explained in detail to the present invention with reference to preferred embodiment, those skilled in the art should manage
Solution, can be modified or replaced equivalently technical solution of the present invention, without departing from the essence and model of technical solution of the present invention
It encloses.
Claims (10)
1. a kind of kitchen ventilator of the multi-frequency noise filtering with through-hole, it is characterised in that：It is provided with smoke machine main body and can eliminate
The noise filtering device of multi-frequency noise, noise filtering device are assemblied in smoke machine main body；
The noise filtering device is set as that multiple panels for eliminating the through-hole of multi-frequency noise are distributed with；
The wall surface of panel towards smoke machine main body is defined as front on one side, another side is defined as reverse side, the through-hole is positive
Aperture is defined as d1, the aperture of through-hole reverse side is defined as d2；
The through-hole is rectilinear through-hole, d1=d2, the side of corresponding through-hole is parallel with the width in panel section；Or
The through-hole is bevel edge through-hole, d1≠d2, wide at included angle A, and A≤20 ° in the bevel edge of corresponding through-hole and panel section.
2. the kitchen ventilator of the multi-frequency noise filtering according to claim 1 with through-hole, it is characterised in that：The panel is set
It is equipped with panel body and protrusion, protrusion and panel body integrally connected, through-hole are through to protrusion, through-hole from panel body
It is set as arc-shaped transition section in panel body, is d with the positive aperture of protrusion1, the aperture of the reverse side of protrusion is d2。
3. the kitchen ventilator of the multi-frequency noise filtering according to claim 1 or 2 with through-hole, it is characterised in that：The d1≤
30mm；
The d1Value be it is multiple.
4. the kitchen ventilator of the multi-frequency noise filtering according to claim 1 or 2 with through-hole, it is characterised in that：It is described logical
Minimum range between the positive edge in hole and the positive edge of adjacent through-holes is b, and b is the arbitrary value more than 0；
The value of the b is multiple.
5. the kitchen ventilator of the multi-frequency noise filtering according to claim 3 or 4 with through-hole, it is characterised in that：The face
Plate is provided with multiple regions, and multiple through-holes are by area distribution in corresponding positions of panels；
The region is symmetrical formula region, formula region symmetrical above and below or asymmetric formula region；Or
The region be divergence expression region, spiral region, wave region, winding type region or remove above-mentioned zone with
Machine formula region.
6. the kitchen ventilator of the multi-frequency noise filtering according to claim 5 with through-hole, it is characterised in that：By adjusting not
With the edge minimum range in the aperture of through-hole, the edge of through-hole and adjacent through-holes, via regions distribution or panel and smoke machine master
The combination of the distance of body reaches multi-frequency noise noise reduction；
The thickness of the panel is less than 20mm.
7. the kitchen ventilator of the multi-frequency noise filtering according to claim 4 with through-hole, it is characterised in that：The panel with
There are gaps between the immediate wall surface of smoke machine main body, are H by the distance definition in gap1；
The noise filtering device is additionally provided with sound-absorbing part, and sound-absorbing part assembles smoke machine main body；
The thickness of the sound-absorbing part is defined as H2, and H2≤0.6H1。
8. the kitchen ventilator of the multi-frequency noise filtering according to claim 7 with through-hole, it is characterised in that：The sound-absorbing part
It is fixed on the outer surface of panel；Or
The sound-absorbing part is fixed on the surface of panel and the nearest wall surface of smoke machine main body；Or
The sound-absorbing part is fixed between panel and the nearest wall surface gap of smoke machine main body.
9. the kitchen ventilator of the multi-frequency noise filtering according to claim 8 with through-hole, it is characterised in that：The sound-absorbing part
For fiber, PP cottons, polyester fiber, Carbon fibe or porous foam；Or
The sound-absorbing part is porous plate.
10. the kitchen ventilator of the multi-frequency noise filtering according to claim 9 with through-hole, it is characterised in that：The panel
For metal decking, plastic front board or alloy panel；
The panel is connected with reinforced structure；
The reinforced structure is convex closure, recessed packet or reinforcing rib；
It is 100Hz~8000Hz that the noise filtering device, which eliminates noisy frequency range,.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810776887.1A CN108731079A (en) | 2018-07-14 | 2018-07-14 | A kind of kitchen ventilator of the multi-frequency noise filtering with through-hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810776887.1A CN108731079A (en) | 2018-07-14 | 2018-07-14 | A kind of kitchen ventilator of the multi-frequency noise filtering with through-hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108731079A true CN108731079A (en) | 2018-11-02 |
Family
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| CN201810776887.1A Pending CN108731079A (en) | 2018-07-14 | 2018-07-14 | A kind of kitchen ventilator of the multi-frequency noise filtering with through-hole |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0596846A1 (en) * | 1992-11-03 | 1994-05-11 | Aktiebolaget Electrolux | Kitchen ventilator |
| CN2656683Y (en) * | 2003-11-06 | 2004-11-17 | 宁波方太厨具有限公司 | Noise reducing casing for kitchen ventilator |
| CN1917036A (en) * | 2006-09-12 | 2007-02-21 | 浙江大学 | Perforation plate for improving sound absorptivity |
| CN101149296A (en) * | 2007-11-09 | 2008-03-26 | 北京航空航天大学 | Broad-band noise-reducing acoustic liner and its manufacture method |
| CN203809356U (en) * | 2014-03-31 | 2014-09-03 | 美的集团武汉制冷设备有限公司 | Volute for air-conditioner indoor unit and air-conditioner indoor unit |
| CN106871204A (en) * | 2017-03-31 | 2017-06-20 | 广东美的厨房电器制造有限公司 | Range hood |
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2018
- 2018-07-14 CN CN201810776887.1A patent/CN108731079A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0596846A1 (en) * | 1992-11-03 | 1994-05-11 | Aktiebolaget Electrolux | Kitchen ventilator |
| CN2656683Y (en) * | 2003-11-06 | 2004-11-17 | 宁波方太厨具有限公司 | Noise reducing casing for kitchen ventilator |
| CN1917036A (en) * | 2006-09-12 | 2007-02-21 | 浙江大学 | Perforation plate for improving sound absorptivity |
| CN101149296A (en) * | 2007-11-09 | 2008-03-26 | 北京航空航天大学 | Broad-band noise-reducing acoustic liner and its manufacture method |
| CN203809356U (en) * | 2014-03-31 | 2014-09-03 | 美的集团武汉制冷设备有限公司 | Volute for air-conditioner indoor unit and air-conditioner indoor unit |
| CN106871204A (en) * | 2017-03-31 | 2017-06-20 | 广东美的厨房电器制造有限公司 | Range hood |
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Application publication date: 20181102 |